Thanks for Sidney and Rui for the replies. I do not develop many B/W films. Once in a while, Saturday morning when all family sleeping, I develop 1 to 4 films. It is make sense to make tests if I develop many films but at this rate I have to rely on the sheets. Till now I didn't find any unmatches between those sheets. Pini _______________________ Pini Vollach http://www.pinimage.com -----Original Message----- From: owner-photoforum@listserver.isc.rit.edu [mailto:owner-photoforum@listserver.isc.rit.edu]On Behalf Of Rev. Sidney Flack Sent: Saturday, December 20, 2003 4:31 PM To: List for Photo/Imaging Educators - Professionals - Students Subject: Re: Help - Ilford HP5 & Agfa Rodinal 1+25 Pini Vollach wrote: > In the developer paper it say 8 min. to this combo in 20C > In the HP5 internet PDF it says 6 min. > > What is right ? The time that is right for your water source. Pini, see if there is a publication date on either piece of literature. The one that is the latest may reflect a change in the chemistry of either the developer or the emulsion. If it does that may be the better starting point for your tests. The directions with any film/developer combination are always suggested starting points and never definitive answers. The chemistry is never completely mixed until it's in your water, the temperature determined by your thermometer, and the film has been exposed in your camera. Once you've got all of those together then you can begin to determine what is your normal developing time. Peace! Sidney P.S., could do us a favor and please set your type to plain.
